DescriptionThe AL-130R is an Active Loop Antenna (loop size: 19” x 19” [0.5 m x 0.5 m] with electrostatic shield), operating over the frequency range of 9 kHz to 30 MHz. It has a built-in, low-noise preamplifier, which increases overall measurement sensitivity as well as the overall signal to noise ratio. The antenna is battery powered (rechargeable 6V NimH battery pack). The AL-130R can also be powered by the supplied charger/power adapter. The front panel has LED indicators for RF ON/OFF, power, battery low, amplifier saturation, as well as charging status.

ConstructionThe AL-130R is designed for durability, making it the ideal choice for daily use in most environments. It is constructed using high grade aluminum, which is also powder coated for additional durability.

MountingThe AL-130R has a 1/4 inch x 20 threaded hole on the bottom of the preamplifier enclosure, which is used to secure the antenna to any tripod or antenna mast with a compatible mounting arrangement. Com-Power’s AT-220 Tripod is the recommended support for this antenna. Using this tripod, the center-point of the loop can be adjusted from 0.95 meter to 1.35 meters (37” to 53”).

CalibrationThe antenna is individually calibrated using NIST Traceable equipment per IEEE 291. The calibration data, along with certificate, are provided. Recognized ISO 17025 accredited calibration is also available upon request.Com-Power Corporation 19121 El Toro Rd., Silverado, California 92676 (949) 459-9600 www.com-power.com

ApplicationThe AL-130R Active Loop Antenna is intended for use as an EMI test antenna for qualification-level regulatory compliance measurements per most commercial product test procedures including, but not limited to, ANSI C63.4, along with most CISPR, EN, ETSI standards. Typically, the antenna is positioned vertically with the center-point of the loop elevated one meter above the ground. The loop is then rotated about its horizontal and vertical axis to achieve the maximum reading at each frequency.

The AL-130R can be used for Electric field (E-Field) or magnetic field (H-Field) measurements. Factors are provided for both types of measurements.

Remote Operation (Optional)As per ANSI C63.4-2014, the use of an active loop antenna for compliance testing is permitted in a non-sheilded environment ONLY if the saturation indicator is continuously monitored during the course of testing.Com-Power’s Remote Antenna Interface (RAI-100) comes in very handy for this application. The RAI-100 is a compact controller which is used to enable/disable the RF measurement circuit and monitor saturation and battery low indicators remotely via a fiber optic cable up to 30 mtrs in length.

Features • Frequency Range: 9 kHz to 30 MHz

• Built-in,BatteryOperatedPreamplifier

• Fiber Optic Remote Monitor/Control option

• Electric or Magnetic Field Measurements

• Individual Calibration per IEEE 291 Included

• Three-year Standard Warranty

Active Loop AntennaAL-130R

Rev. D10.17

Com-Power Corporation 19121 El Toro Rd., Silverado, California 92676 (949) 459-9600 www.com-power.com

Product Name Active Loop Antenna

Frequency Range 9 kHz to 30 MHz

Loop Size 19” x 19” (0.5 m x 0.5 m)

Nominal Impedance 50Ω(output port)

AC Adapter Output Power 6 VDC (unregulated), 500 mA

Battery Type 6 VDC NimH (rechargeable)

Average Battery Life 10-12 hours

E-Field Antenna Factors 13.4 to 16.4 (average: 14.9) [dB(m-1)]

Saturation Level >1V/m/>120dBμV/m (>2.65 mA/m) / >68.5 dBμA/m)

Antenna Factor Variation ±1.5 dB

Sensitivity (typical): -3 dBuA/m @ 10 kHz

-44 dBuA/m @ 1 MHz

RF Connector BNC-type (female)

Specifications ANSI C63.4, CISPR, EN, ETSI, etc.

Dimensions (H x W x D) 20.1” x 19.7” x 10.6” [51 x 50 x 27 cm]

Active Antenna Factors (E-Field & H-Field)

0

5

10

15

20

25

30

0.001 0.01 0.1 1 10 100

Frequency (MHz)

E-FieldA

nt. F

acto

r [dB

(m-1

)]

-51.5

-46.5

-41.5

-36.5

-31.5

-26.5

-21.5

H-Field Ant. Factor [dB(Ω/m)]

MagneticField

Strength

= Voltage (dBV) + [E-Field] Factor

== Voltage (dBV) + [H-Field] Factor

= [E-Field] Strength (V/m) 377Ω

51.5

[E-Field] Strength (dBV/m) 51.5

A/mdBA/m

dBA/m

dBA/m

E[E-Field]

(electric field)

=H[H-Field]

(magnetic field)

51.5 dBLog [ 377Ω ]

(impedance of air)

-1

Active Loop AntennaAL-130R

Rev. D10.17

(D)10.9”

(27.7 cm)

7.3”(18.6 cm)

(W)19.7”

(50 cm)

(H)20.35”

(51.7 cm)

0.75”(1.9 cm)

2.56”(6.5 cm)

BATTERY LOW CHARGINGOUTPUT 50Ω

AL-130R ACTIVE LOOP ANTENNA9 kHz to 30 MHz

RF OUTPUTON/OFF

REMOTE ACCESSPOWER REMOTE LINK

6 VDC, 500 mA-+

RF OUTPUT ON SATURATION

LOOP ANTENNAAL-130R

RAI-100 Remote Antenna Interface

AT-220 Antenna Tripod

Also Available:AB-900A Biconical Antenna

AM-741 Active Monopole AntennaAL-100, ALP-100, ALC-100 Log Periodic Antennas

Accessories availablefrom Com-Power:

SPA-800 Spectrum Analyzer

E[E-Field]

(electric field)

=H[H-Field]

(magnetic field)

51.5 dBLog [ 377Ω ]

(impedance of air)

-1

MAGNETIC FIELD EQUATIONS(AMPS per meter)

= [E-Field] Strength (V/m) 377ΩA/m

= Voltage (dBV) + [E-Field] Factor 51.5 dBA/m

= [E-Field] Strength (dBV/m) 51.5 dBA/m

= Voltage (dBV) + [H-Field] FactordBA/m

ELECTRIC FIELD EQUATIONS(VOLTS per meter)

= [H-Field] Strength (A/m) x 377ΩV/m= [H-Field] Strength (dBA/m) + 51.5 dBV/m

= Current (dBA) [E-Field] Factor + 51.5 dBdBV/m

= Current (dBA) [H-Field] FactordBV/m

= Voltage (dBV) + [E-Field] FactordBV/m

All values are typical, unless specified.All specifications are subject to change without notice.